What type of valves must be used for shutoffs in pipe connections between a boiler and a water column?

For shutoffs in pipe connections between a boiler and a water column, the appropriate type of valve to use is gate valves or stopcocks. These types of valves provide a reliable means of isolating sections of the boiler piping system for maintenance or in emergency situations, allowing for safe and effective control of water flow.

Gate valves are designed for full flow applications and create a low-resistance path for fluid when fully open. They function by either fully opening or fully closing the flow of water, which is essential for minimizing turbulence and potential damage that may arise from throttling flow through a partially opened valve.

Stopcocks, similar to gate valves, also provide a reliable shutoff option. Their design allows for quick operation, which can be crucial in scenarios where rapid isolation of the water column from the boiler is necessary.

Using ball valves, pressure relief valves, or check valves in this context would not be suitable. Ball valves, while they can be used for shutoff, are typically more effective for applications requiring quick switching and are not always preferred for the specific roles in boiler systems. Pressure relief valves serve the specific function of relieving excess pressure and are not meant for shutting off flow. Check valves are designed for preventing backflow but do not serve as